Pedometer incorporated in a mechanical watch

ABSTRACT

A watch includes a pedometer mechanism for estimating a physical activity level. The watch includes at least one moving or pivoting weight arranged to drive a ratchet, an elastic or friction holder for holding the ratchet in position between two movements of the moving or pivoting weight, the ratchet driving a gear train displaying, on a display, a value corresponding, to within a multiplicative factor, to the number of pivoting motions of the ratchet, and/or to the value of the cumulative angular rotation of the ratchet, and the pedometer mechanism includes a limiter only allowing the pivoting of the ratchet from a minimum threshold corresponding to a minimum travel of the weight if the weight is movable or to a minimum angular rotation value of the weight if the weight pivots.

This application claims priority from European Patent application15191437.1 of Oct. 26, 2015, the entire disclosure of which is herebyincorporated herein by reference.

FIELD OF THE INVENTION

The invention concerns a watch comprising a pedometer mechanism forestimating a physical activity level, comprising at least one moving orpivoting weight arranged to drive a ratchet, and elastic or frictionholding means for holding said ratchet in position between two movementsof said moving or pivoting weight.

The invention concerns the field of mechanical watches, particularlypedometer-type watches.

BACKGROUND OF THE INVENTION

Since the invention of pedometer watches in the XIX century, thequantification of human physical activity has changed a great deal,especially since the appearance of watches having an electronicmovement. The design of mechanical watches for such uses has beenneglected, although many users are mechanical watch aficionados and donot wish to wear two different devices, one for measuring and displayingtime and the other for measuring physical activity.

U.S. patent application Ser. No. 4,460,823 A in the name of RUEHLEMANNGERHARD describes a pedometer for indicating distance travelled by awalker or a runner, comprising a mechanical digital counter, driven viaa gear train from a ratchet wheel. A pivoting pendulum is maintained inan at-rest position by a first biasing spring, which is suitable for useduring walking. During running-type operation with more kinetic energyon the pendulum, a second return spring may be selectively engaged withthe first biasing spring to increase the tension thereof, to absorb theadditional energy without damage to the device. A movable stop for thependulum comprises an external adjustment knob to set the pendulumtravel according to the length of stride of the user. The user maychange the length of stride and the walk/run mode without resetting thedigital distance indicator.

U.S. patent application Ser. No. 3,818,194 A in the name of BIROdescribes a pedometer intended to indicate the distance travelled by theuser, comprising inside a case a support plate for a distance indicatormeans, and drive means for the indicator means, said drive meanscomprise a gear train operatively connected to the indicator means, apendulum, means for pivotally mounting one end of the pendulum to theplate, the pendulum being swingable in a plane substantiallyperpendicular to the support plate, in response to the strides of theuser, means for converting the swinging motion of the pendulum into anincremental rotational motion of the gear train.

SUMMARY OF THE INVENTION

The invention proposes to incorporate a step counter or an activitymeasurement in a mechanical watch, where possible using componentsalready existing in the watch.

To this end, the invention concerns a watch according to claim 1.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features and advantages of the invention will appear upon readingthe following detailed description, with reference to the annexeddrawings, in which:

FIG. 1 is a block diagram representing a watch comprising a movement, adate mechanism, display means, a chronograph mechanism, display resetmeans, and a pedometer mechanism according to the invention.

FIG. 2 shows a schematic plan view of a first variant of a countermechanism comprised in a pedometer mechanism according to the invention,comprising a pivoting weight having a weight pinion that cooperates witha truncated wheel.

FIG. 3 is a perspective view of the first variant of FIG. 2.

FIG. 4 represents, in a similar manner to FIG. 2, a second countermechanism variant, wherein the weight pinion cooperates with a drivelever carrying an oblique transmission strip.

FIG. 5 represents another embodiment of the second variant of FIG. 4,wherein the drive lever is replaced by a toothed sector carrying theoblique transmission strip.

FIG. 6 represents, in a schematic perspective view, a first variant of adisplay mechanism comprised in a pedometer mechanism according to theinvention, comprising a fluted shaft causing a toothed sector to pivot,this display mechanism comprising, on either side of the fluted shaft, afirst physical activity display, and a second effort level display.

FIG. 7 is a plan view of the mechanism of FIG. 6.

FIG. 8 is an end view of the mechanism of FIG. 6, in a planeperpendicular to the axis of the fluted shaft and to the plane of thetoothed sector.

FIG. 9 represents a detail of another embodiment of the mechanism ofFIG. 6, wherein the first display and the second display areside-by-side.

FIG. 10 shows a schematic perspective view of a second variant of thedisplay mechanism, with a central display with respect to the watch.

FIG. 11 is a diagram relating to the general operation of the pedometer,to the display reset, and to the display of physical activity, and ofeffort level.

FIGS. 12A to 12F are several representations of different variants forthe display of physical activity over a whole week.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The invention concerns a watch 1, particularly a mechanical watch,arranged to be attached to a limb of a user, comprising a movement 100and display means 80.

Watch 1 comprises a pedometer mechanism 2, which is arranged to estimatea physical activity level related to the movement of a limb and/or ofthe watch user. The term “pedometer” is used by default, since itcorresponds to a type of device known to the general public,particularly in electronic form, and whose applications have long sinceno longer been limited to the mere counting of steps performed by thefirst timepiece pedometers.

Pedometer mechanism 2 according to the invention comprises two parts: acounter mechanism and a display mechanism. As will be explained below,in the variants, this display mechanism may or may not include a resetmechanism.

This pedometer mechanism 2 includes at least one moving or pivotingweight 3.

In a particular embodiment illustrated by FIGS. 1 to 10, this weight 3is arranged to pivot about a weight axis D3 under the action of themotions of the user. Moving or pivoting weight 3 is arranged to drive,directly or indirectly, in only one direction of pivoting, at least oneratchet 4 about a ratchet axis D4.

Moving or pivoting weight 3 is preferably but in a non-limiting manner,similar to an oscillating weight of an automatic winding mechanism. In aparticular embodiment, moving or pivoting weight 3 also forms anoscillating weight of an automatic winding mechanism for recharging anaccumulator of the barrel type or similar.

However, the invention may also be implemented with a weight 3 thatmoves other than in a pivoting motion, with a linear travel or along aparticular trajectory, for example, a circular trajectory inside agroove or suchlike. The notion of movement thus replaces the restrictivenotion of pivoting, and the notion of travel, in the broad sense,replaces the notion of angular travel.

Pedometer mechanism 2 comprises means 5 for holding ratchet 4,especially by friction and/or by elastic return. Holding means 5 arearranged to hold ratchet 4 in position between two movements or pivotingmotions, depending on the case, of moving or pivoting weight 3.

According to the invention, ratchet 4 preferably drives a gear train 6,which is arranged to display, on at least a first display 81 comprisedin display means 80 of watch 1, a value that corresponds, to within amultiplicative factor, to the number of pivoting motions of ratchet 4and/or to the value of the cumulative angle through which ratchet 4 haspivoted.

This displayed value is thus characteristic of the activity exerted bythe user.

Advantageously, moving or pivoting weight 3 is arranged to alsoreplenish with energy at least one barrel or energy accumulator.

According to the invention, pedometer mechanism 2 comprises a limitingmeans 20, which is arranged to allow the pivoting of ratchet 4 only froma minimum threshold corresponding to a minimum travel, or to a givenminimum angular value θ₀, of movement or respectively of pivoting motionof moving or pivoting weight 3.

In a particular variant, pedometer mechanism 2 comprises a detectionmeans 30, which is arranged to detect the direction of movement,particularly of pivoting motion, of moving or pivoting weight 3.Pedometer mechanism 2 further comprises a locking means 40, which isarranged to only allow the pivoting of ratchet 4 if detection means 30has recorded, since the preceding pivoting motion of ratchet 4, at leastone movement, particularly a pivoting motion, of moving or pivotingweight 3, in the opposite direction to that permitted by the driving ofratchet 4.

More particularly, detection means 30 includes a first lever which isarranged to be driven by moving or pivoting weight 3, and which changesangular position according to the direction of movement, particularly ofpivoting motion, in which it is driven.

More particularly still, locking means 40 comprises a secondbidirectional lever, which is arranged to be immobilised or released bythe first lever, according to the angular position of the first lever.This second bidirectional lever, according to the position that itoccupies, prevents or allows the pivoting of ratchet 4.

In a particular embodiment, locking means 40 is a differential totalizermechanism.

In a particular variant, watch 1 comprises a means 50 for measuring thetravel of movement, particularly the pivoting motion, of moving orpivoting weight 3 during each of its movements, particularly pivotingmotions. The watch preferably also includes a means 60 of cumulating theabsolute values of the successive travels measured by the measuringmeans starting from an initial moment.

More particularly, watch 1 comprises a control means 70 for determiningan initial moment and a final moment.

More particularly, display means 80 comprise first display 81, and ameans 83 for the cumulative display of a magnitude homothetic to thecumulative value of the absolute successive travel values, and watch 1comprises a reset means 110 for removing the value displayed by at leastone of display means 80.

In a particular embodiment, by default, each day, the initial moment isat zero hour, and the final moment is at midnight.

In a particular embodiment, control means 70 is a chronograph mechanism.

Preferably, watch 1 comprises a date mechanism 10, which is arranged tocontrol, daily at midnight, a reset mechanism 110 to remove the valuesdisplayed on at least a first display 81. This control can be achievedwith a twenty-four hour wheel and an ad hoc mechanism to actuate a jumpat midnight, well known to those skilled in the art.

In a particular variant, in order to adjust the use of watch 1 and thedisplay that it provides to various types of activities corresponding toquite different categories of energy expenditure, watch 1 comprises areduction means 90, which is adjustable by the user via a first actuator91, to change the display transmission ratio, according to the type ofactivity exerted by the user.

In another particular variant, as seen in particular embodiments in FIG.12, watch 1 comprises a plurality of X+1 first displays 81, eachcorresponding to one day of a particular observation period, notablyhere where X=6 corresponds to a day of the week. Watch 1 also comprisesa date mechanism 10, which is arranged to actuate, daily beforemidnight, the reset of a first display 81 for the next day, and atmidnight the change of display from first display 81 for the precedingday to first display 81 for the day that is beginning. Thus the usermay, during his observation period, particularly a week, keep thesimultaneous display of energy expenditure for each of the successivedays forming this period, the display relating to the oldest day beingdeleted, each day at midnight, in favour of the display relating to theday that is beginning.

In the particular example of FIGS. 12A to 12F, the dial comprises, inseven positions I, II, III, IV, V, VI, VII, seven small hands forindicating the activity of the last seven days. At midnight, a verticalcoupling changes from one hand to the next after first effecting areset. Each hand wheel is held in position by slight friction.

The diagram of FIG. 12A concerns, on small dial IV, day J at 10:10, thehand provides an incremental daily activity display. The other days arefixed: dial V: J+1, dial VI: J+2, . . . , dial III: J+X. The diagram ofFIG. 12B concerns the same mechanism, on small dial IV, on day J at24:00 the daily activity is locked. After midnight, the mechanism locksthe hand for the previous day, and disengages the drive mechanismthereof.

The diagrams of FIGS. 12C and 12D concern the change just after midnightin a variant with fixed dials, whereas the diagrams of FIGS. 12E and 12Fconcern the change just after midnight in a variant with dials that movethrough one notch each day, turning one increment with respect to thelarge dial that carries the small secondary dials.

The diagrams of FIGS. 12C and 12D show a one-day difference in activityfor each dial There is disengagement of the dial indexing mechanism,reset of all the dials, reset of the day J−1 indication and a one-dayshift in the indexing of the dials. Day J is in position IV in both ofthese diagrams.

The diagrams of FIGS. 12E and 12F show a one-day difference in activityfor each dial. Day J is in position IV in the diagram of FIG. 12E, andchanges into position V in the diagram of FIG. 12F. A disc rotationmechanism allows day J of FIG. 12E to be replaced in position IV by dayJ+X in FIG. 12F, with the hand reset to zero, and the engagement of thedaily activity transmission. The dial indexing mechanism is disengaged,all the dials are reset, the day J−1 indication is reset, the dials areindexed with a one-day lag.

In a particular variant, watch 1 comprises an actuator 111, which can beactuated by the user, and which is arranged to control a reset mechanism110 to remove the values displayed on at least a first display 81.

FIGS. 1 to 10 describe several non-limiting examples of constituentelements of a pedometer mechanism 2 according to the invention.

Moving or pivoting weight 3 preferably includes a weight pinion 31. Thisweight pinion 31 is advantageously arranged to cooperate, directly orindirectly, with a pair of reverser wheels 41, 42, which are arranged totransmit a movement in only one direction of pivoting to ratchet 4. Sucha mechanism is well known for self-winding mechanisms, and is notdescribed in detail here.

In the particular embodiment of FIGS. 2 and 3, weight pinion 31 mesheswith a first toothed sector 34, which is toothed over less than half itsperiphery, and which comprises a finger 33, which is returned to acentral position by branches 36, 37, of a return spring 35 ofsubstantially circular shape, surrounding weight pinion 31 or moving orpivoting weight 3. This toothed sector 34 is integral with a wheel 32,which meshes with one of reverser wheels 41, 42, and spring 35 hereforms the limiting means 20.

In the particular embodiment of FIGS. 4 and 5, moving or pivoting weight3 comprises a weight pinion 31, which is arranged to drive the pivotingof a drive lever 38, or a drive sector or a wheel 380 in FIG. 5, whichis returned to a median position by elastic return strips 44, 45, andwhich carries an oblique transmission strip 39. The transmission betweenwheel 31 and wheel 380 occurs by friction since wheel 31 must always beable to turn when pin 460 is blocking wheel 380. Oblique transmissionstrip 39 or 390 in FIG. 5 may be pivoted, with a limited travel and/orelastic return, inside a housing 391. In FIG. 5, the elastic return maybe achieved via the elastic cooperation of a pin 460 elastically mountedwith respect to a structure, relative to which pin pivots an oblongopening 470 of sais wheel 380, limited by abutment surfaces 440 and 450.Oblique transmission strip 39 is arranged, in only one direction ofpivoting of drive lever 38 or of drive sector 38A, to push the toothingof a click wheel cooperating with ratchet 4 or to directly push thetoothing of ratchet 4 in order to pivot the latter, and, to slide overthe click wheel or respectively ratchet 4 without driving it, in theopposite direction of pivoting.

In a particular embodiment, limiting means 20 comprises at least onetransmission jumper 43, which cooperates with the toothing of ratchet 4to prevent the pivoting thereof when moving or pivoting weight 3 movesthrough an angle less than the minimum given angular value θ₀.

In the variant of FIGS. 4 and 5, jumper 43 is arranged to cooperate withthe click wheel or respectively ratchet 4 to prevent the return thereof.

In the particular embodiment of FIGS. 6 to 9, ratchet 4 comprises atoothing which is arranged to cooperate with a complementary toothing ofa drive wheel 12 of axis perpendicular to that of ratchet 4, held by ajumper 5. This drive wheel 12 drives the pivoting of a shaft 11 whichcarries, in a fluted area, a sliding pinion 15 pushed back towards drivewheel 12 by a first elastic return means 33. This shaft 11 carries aradial arm 18, which is arranged to push back, against a second elasticreturn means 23, a second toothed sector 21, which extends in a planeparallel to pivot axis D0 of shaft 11 and remote therefrom, and whosetoothing 22 drives a wheel 25 comprised in first display 81. At leastone stop 34 advantageously limits the angular travel of second toothedsector 21, which is preferably returned by an elastic return means 210towards shaft 11.

More particularly, and advantageously, shaft 11 is axially movable, intodiscrete positions that can be adjusted by the user acting on a firstactuator 91, for example similar to pulling the stem of a winding andtime-setting mechanism. The mechanism of FIGS. 6 to 9 may also use anumber of components of such a conventional winding and time-settingmechanism. Shaft 11 is, in that case, arranged to drive a wheel 31comprised in a second display 82 for displaying the effort level of theactivity concerned.

In a variant, the plane of rotation of second toothed sector 21 may,under the action of a user, be moved closer to or farther from the axisof shaft 11 in order to modify the lever arm, and therefore the range ofmotion.

Preferably, watch 1 includes a date mechanism 10 controlling the dailyjump at midnight of a finger 290 of a spring 29 in order to pivot alever 19 cooperating with a groove 17 of sliding pinion 15, to returnthe latter against first elastic return means 33.

FIG. 10 represents a second variant display mechanism, with a centraldisplay 25 with respect to watch 1. This display 25 is also controlledby a second toothed sector 21, which is integral with a shaft 211 andwith a second arm 210, located in a plane parallel to a similar shaft 11to that of FIG. 6, which shaft 11 also includes an oblique arm 18 whichpushes second arm 210 and pivots shaft 211 and therefore second toothedsector 21. Here too, it is easy, as a result of the rack/pin system, tovary the transmission ratio to change the reference effort level.

In short, it is possible to tailor-make watch 1 for a determined use.

For example, for a watch 1 strictly used as a pedometer, the number ofsteps is equal to the number of back-and-forth motions of moving orpivoting weight 3. A mechanism for example causes a hand to advance oneincrement, when it detects an angle of rotation of the rotor greaterthan a given minimum value so as to filter out unwanted movements.

For version that evaluates an activity level, the activity level isproportional to the total movement of moving or pivoting weight. Tototal the cumulative rotation of the moving or pivoting weight, it ispossible to use a known power reserve type mechanism, however withoutthe connection to the barrel which would continually reduce the activityindication.

As seen in FIG. 11, the daily reset is achieved:

-   -   either by a date mechanism 10 of watch 1, or by a twenty-four        hour wheel, which controls an activation mechanism every        twenty-four hours, for example the beak of spring 29 of FIG. 6        controlling the pivoting of lever 19,    -   or manually by a push-piece or a second actuator 111 controlling        a reset mechanism,    -   or by both.        Reset mechanism 110 thus controls the movement of activity level        hand 26, with respect to a dial 260.

FIG. 10 also summarizes the physical activity and effort level display.An adjustment crown 109 acts on an amplitude adjustment mechanism 120which acts, on the one hand, on an objective transmission mechanism 130controlling the movement of an activity level hand 26 with respect to anactivity dial 260, and on the other hand, a scale transmission mechanism140 controlling the movement of an effort level hand 32 with respect toan effort level dial 320, or a bar with respect to a scale, or suchlike.

The utilisation of date mechanism 10 can also produce an animateddisplay, for example in the form of a person who raises his arms higherand higher during the day according to the cumulative physical activity,and whose arms drop down again on the change to midnight.

1. A watch comprising a pedometer mechanism for estimating a physicalactivity level, comprising at least one moving or pivoting weightarranged to drive a ratchet, elastic or friction holding means forholding said ratchet in position between two movements of said moving orpivoting weight, wherein said ratchet drives a gear train displaying ona display a value corresponding, to within a multiplicative factor, tothe number of pivoting motions of said ratchet and/or to the value ofthe cumulative angular rotation of said ratchet, and wherein saidpedometer mechanism comprises a limiting means only allowing thepivoting of said ratchet from a minimum threshold corresponding to aminimum travel of said weight if the weight is movable or to a minimumangular rotation value of said weight if the weight pivots, wherein saidpedometer mechanism comprises a means for measuring the travel ofmovement of said moving or pivoting weight during each of its movements,and a means for cumulating the absolute values of the successive travelsmeasured by said measuring means from an initial moment, wherein saidwatch comprises a control means for determining said initial moment anda final moment, and wherein said watch comprises display meanscomprising said first display and a means for the cumulative display ofa magnitude homothetic to the cumulative value of said absolutesuccessive travel values, and wherein said watch comprises a resetmechanism for removing the value displayed by said cumulative displaymeans, wherein, each day, said initial moment is at zero hour, and saidfinal moment is at midnight.
 2. The watch according to claim 1, whereinsaid control means is a chronograph mechanism.
 3. The watch according toclaim 1, wherein said watch comprises a date mechanism arranged toactuate, daily at midnight, a reset mechanism to remove the valuesdisplayed on said at least one first display.
 4. The watch according toclaim 1, wherein said pedometer mechanism comprises a reduction means,adjustable by the user via a first actuator, to change the displaytransmission ratio, according to the type of activity exerted by saiduser, and to select, on a second display comprised in display means ofsaid watch, a scale of effort level.
 5. The watch according to claim 1,wherein said watch comprises a plurality of said first displays eachcorresponding to a day of the week, and comprises a date mechanismarranged to actuate, daily before midnight, the reset of a said firstdisplay for the following day, and at midnight, the change of displayfrom said first display for the preceding day to said first display forthe day that is beginning.
 6. The watch according to claim 1, whereinsaid watch is arranged to be attached to a limb of a user, wherein saidpedometer mechanism is arranged to estimate a physical activity levelrelated to a movement of said limb or of said user of said watch,wherein at least one said weight is arranged to pivot about a weightaxis under the action of movements of the user and said weight, whichpivots, is arranged to drive, directly or indirectly, in only onedirection of pivoting, at least one said ratchet about a ratchet axis,said pedometer mechanism comprising means for holding said ratchet byfriction and/or elastic return arranged to hold said ratchet in positionbetween two pivoting motions of said weight which pivots, and saidratchet driving a gear train arranged to display, on at least onedisplay comprised in said watch, a value corresponding, to within amultiplicative factor, to the number of pivoting motions of saidratchet, and/or to the value of the cumulative angular rotation of saidratchet, and wherein said limiting means is arranged to only allow thepivoting of said ratchet from a minimum threshold corresponding a givenminimum angular rotation value of said weight.
 7. The watch according toclaim 1, wherein said pedometer mechanism comprises a detection meansarranged to detect the direction of movement of said moving or pivotingweight, and comprises a locking means arranged to only allow thepivoting of said ratchet if said detection means has recorded, since thepreceding pivoting motion of said ratchet, at least one movement of saidmoving or pivoting weight in the opposite direction to that which allowsthe driving of said ratchet.
 8. The watch according to claim 7, whereinsaid detection means comprises a first lever arranged to be driven bysaid moving or pivoting weight and changing angular position accordingto the direction of movement or pivoting in which said weight is driven.9. The watch according to claim 8, wherein said locking means comprisesa second bidirectional lever arranged to be immobilised or released bysaid first lever, according to the angular position of said first lever,and wherein said second bidirectional lever may or may not prevent thepivoting of said ratchet, according to the angular position of saidsecond bidirectional lever.
 10. The watch according to claim 9, whereinsaid locking means is a differential totalling mechanism.
 11. The watchaccording to claim 1, wherein said watch comprises a second actuatoractuatable by the user and arranged to control a reset mechanism forremoving the values displayed on said at least one first display. 12.The watch according to claim 1, wherein said limiting means comprises atleast one transmission jumper cooperating with the toothing of saidratchet to prevent the pivoting thereof when said moving or pivotingweight moves through a shorter travel than a minimum given travel orthrough a smaller angle than said minimum given angle.
 13. The watchaccording to claim 1, wherein said moving or pivoting weight pivots andcomprises a weight pinion arranged to cooperate, directly or indirectly,with a pair of reverser wheels arranged to transmit a movement in onlyone direction of pivoting to said ratchet.
 14. The watch according toclaim 13, wherein said weight pinion meshes with a first toothed sectortoothed over at least half the periphery thereof and which comprises afinger returned to a central position by branches of a return spring ofsubstantially circular shape surrounding said weight pinion or saidmoving or pivoting weight, said toothed sector being integral with awheel meshing with one of said reverser wheels, said spring forming saidlimiting means.
 15. The watch according to claim 1, wherein said movingor pivoting weight comprises a weight pinion arranged to drive thepivoting of a drive lever or a drive sector which is returned to amedian position by return strips and which carries an obliquetransmission strip arranged, in only one direction of pivoting of saiddrive lever or of said drive sector, to push the toothing of a clickwheel cooperating with said ratchet or to directly push the toothing ofsaid ratchet in order to pivot the latter, and to slide over said clickwheel or respectively said ratchet without driving said ratchet, in theopposite direction of pivoting.
 16. The watch according to claim 12,wherein said jumper is arranged to cooperate with said ratchet toprevent the return thereof.
 17. The watch according to claim 1, whereinsaid ratchet comprises a toothing arranged to cooperate with acomplementary toothing of a drive wheel of axis perpendicular to that ofsaid ratchet and driving the pivoting of a shaft carrying, in a flutedarea, a sliding pinion pushed back towards said drive wheel by a firstelastic return means, said shaft carrying a radial arm arranged to pushback, against a second elastic return means, a second toothed sectorextending in a plane parallel to the pivot axis of said shaft and remotetherefrom and whose toothing drives a wheel comprised in said firstdisplay.
 18. The watch according to claim 17, wherein said arbor isaxially movable into discrete positions adjustable by an action of theuser, and is arranged to drive a wheel comprised in a second display forthe display of an effort level of the activity concerned.
 19. The watchaccording to claim 17, wherein said watch comprises a date mechanismcontrolling the daily jump at midnight of a finger of a spring in orderto pivot a lever cooperating with a groove of said sliding pinion toreturn the latter against said first elastic return means.
 20. The watchaccording to claim 1, wherein said moving or pivoting weight is arrangedto also replenish with energy at least one barrel or energy accumulator.